考虑以下简单的go程序packagemainimport("io""encoding/json""os")typeMyEncoderinterface{Encode(vinterface{})error}typeMyEncoderCreatorfunc(io.Writer)*MyEncodertypeMyContainerstruct{CreatorMyEncoderCreator}funcmain(){container:=Container{Creator:json.NewEncoder,}encoder:=container.Creator(os.Stdout)encoder.E
